Deprecate 0.6.5 and publish 0.7.0
Remove TeamCity reporter

We are not aware of anyone using it (we don't use it either), but it
requires maintenance and updates every time something changes in
reporters API. Instead, we are going to provide ability to load
reporters from external packages, so someone might one day re-implement
it.
Merge pull request #60 from bem/feature/no-teamicty

Remove TeamCity reporter
Add 'grep' command line option to execute only matching suits
Add tests